Is the Litchi app worth it?

Hi fellow Phantom pilots,
I have been wondering for some time if it's a good idea to get the litchi app. However I am not sure if it's worth the $15. What exactly do you use it for that you can't do without it? In other words, what type of flight operations makes this app useful? I just don't see a purpose for it that justifies the price, which is why I am asking.
Thanks!

Primarily it gives u the ability to set way points without previously flying them. You plan a route it goes, you set it to crash into something it does that. If you lose video feed it will continue its mission. This has been covered quite extensively, but that's my take with iOS.

I assume IOS, not android. I know go-home altitude is on the android, but it is a rather different app than IOS. HOWEVER, I cant imagine that it is not there - did you read through the litchi tutorials?